noun

a flower or a mass of flowers, especially on a tree or bush.

tiny white blossoms

flower,bloom,floweret,blossoming,inflorescence,florescence,efflorescence

verb

(of a tree or bush) produce flowers or masses of flowers.

a garden in which roses blossom

flower,bloom,floweret,blossoming,inflorescence,florescence,efflorescence,be in flower,come into flower/blossom,open (out),burgeon,bud,sprout,mature,burst forth,unfold,in flower,flowering,blooming,in (full) bloom,open,out